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Old 10-06-2008 | 09:10 PM
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Jetdesign
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Default RE: OS .55AX engine break-in and usage
I disagree. Follow the break in procedure in the manual, which has you alternate between very rich and a little rich, like you did.

Yes, the engine will gain power over time, even though most may say it's 'broken in' after a few tanks - this has been my experience with 3 AX engines this summer. After a few gallons they all turned larger props at faster rpms.
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